Effect of osmotic stress on osmolyte accumulation and ammonia assimilating enzymes in chickpea cultivars

Pawar, V. V.; Lokhande, P. K.; Dalvi, U. S.; Awari, V. R.; Kale, A. A.; Chimote, V. P.; Naik, R. M.

doi:10.1007/s40502-015-0159-2

Cited by 11 publications

(10 citation statements)

References 11 publications

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“…The significant accumulation of phenolic compounds in tissues of drought tolerant plants and their powerful ROS scavenging roles indicate their roles against the oxidative damage caused by drought and salt stress ( Reginato et al, 2015 ). Some previous reports also confirmed the contributions of different osmolytes in inducing drought tolerance in various crops ( Tan et al, 2006 ; Farooq et al, 2009 ; Pawar et al, 2015 ).…”

Section: Discussionsupporting

confidence: 61%

Drought Induced Changes in Growth, Osmolyte Accumulation and Antioxidant Metabolism of Three Maize Hybrids

et al. 2017

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Consequences of drought stress in crop production systems are perhaps more deleterious than other abiotic stresses under changing climatic scenarios. Regulations of physio-biochemical responses of plants under drought stress can be used as markers for drought stress tolerance in selection and breeding. The present study was conducted to appraise the performance of three different maize hybrids (Dong Dan 80, Wan Dan 13, and Run Nong 35) under well-watered, low, moderate and SD conditions maintained at 100, 80, 60, and 40% of field capacity, respectively. Compared with well-watered conditions, drought stress caused oxidative stress by excessive production of reactive oxygen species (ROS) which led to reduced growth and yield formation in all maize hybrids; nevertheless, negative effects of drought stress were more prominent in Run Nong 35. Drought-induced osmolyte accumulation and strong enzymatic and non-enzymatic defense systems prevented the severe damage in Dong Dan 80. Overall performance of all maize hybrids under drought stress was recorded as: Dong Dan 80 > Wan Dan 13 > Run Nong 35 with 6.39, 7.35, and 16.55% yield reductions. Consequently, these biochemical traits and differential physiological responses might be helpful to develop drought tolerance genotypes that can withstand water-deficit conditions with minimum yield losses.

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Section: Discussionsupporting

confidence: 61%

Drought Induced Changes in Growth, Osmolyte Accumulation and Antioxidant Metabolism of Three Maize Hybrids

et al. 2017

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“…In addition, free proline in chickpea cvs. 'ICC4958' and 'Vijay' grown under -1.2 MPa PEG-induced osmotic stress increased by 1.37 and 1.34 folds, relating to stimulate P5CS (Δ 1 -pyrroline-5-carboxylate synthetase, a rate-limiting enzyme for proline biosynthesis) activity for 133.7% and 122.1% over control, respectively (Pawar et al, 2015). Likewise, free proline osmolyte in sorghum seedlings cvs.…”

Section: Discussionmentioning

confidence: 98%

Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress

Yooyongwech

Samphumphung

Tisaram

et al. 2017

Not Bot Horti Agrobo

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Sweetpotato is an important tuberous root crop rich in nutrients such as vitamins and carbohydrates, and can grow well in arid regions with less water consuming crop. The aim of this research was to evaluate the storage root yields, physiological, biochemical and morphological traits in sweetpotato cv. 'Japanese Yellow' subjected to polyethylene glycol (PEG)-induced water deficit. At harvest (4 months after planting) the number of storage roots per plant and storage root fresh weight in sweetpotato treated with 5% PEG (−0.54 MPa) in nutrient solution of hydroponic culture declined by 20.0% and 47.4% compared to the control without PEG, respectively. Leaf area and leaf dry weight significantly decreased by 85.6% and 95.3%, respectively when exposed to water deficit stress. Sucrose content (114.7 mg g -1 dry weight; DW) in storage roots of sweetpotato grown under PEG-induced water deficit conditions was enriched by 2.2 fold of control (52.5 mg g -1 DW) and was greater than in storage roots derived from soil culture (70.3 mg g -1 DW). Total soluble sugar in the root and storage root tissues was enriched and may play a key role as osmotic adjustment (OA) in PEG-induced water stressed plants. Free proline and sucrose contents were also dominated in the leaf tissues to maintain the leaf osmotic potential in water stressed plants. In addition, chlorophyll degradation, chlorophyll fluorescence diminution and stomatal closure were found in plants grown under PEG-induced water deficit conditions, leading to reduction in net photosynthetic rate (Pn) and subsequently lesser amounts of glucose and fructose contents in the leaf tissues. Sucrose and free proline in the roots of sweetpotato play a key role as major osmotic adjustment when subjected to PEG-induced water deficit condition. Basic knowledge gained from this research will further be investigated the drought defense mechanism in sweetpotato via osmoregulation system.

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“…Many enzymes are involved in nitrogen metabolism, among which glutamine synthetase (GS; EC 6.3.1.2) and glutamate synthase (GOGAT) are very important for the production of amino acids and amides from inorganic nitrogen (N) [17]. Drought has been reported to restrict plant growth through enzymes inhibition implicated in N metabolism as well [15,20,21]. For instance, Pawar et al [20] demonstrated that drought stress leads to decreased nitrate reductase (NR), GS, and GOGAT enzyme activities.…”

Section: Introductionmentioning

confidence: 99%

“…Drought has been reported to restrict plant growth through enzymes inhibition implicated in N metabolism as well [15,20,21]. For instance, Pawar et al [20] demonstrated that drought stress leads to decreased nitrate reductase (NR), GS, and GOGAT enzyme activities. Inhibition of these enzymes increases the concentration of ammonium, which is toxic for plants; therefore, an increase in the ability of a plant to assimilate ammonium can improve stress tolerance [22].…”

Section: Introductionmentioning

confidence: 99%

High Nitrogen Enhance Drought Tolerance in Cotton through Antioxidant Enzymatic Activities, Nitrogen Metabolism and Osmotic Adjustment

Iqbal

Dong

Wang

et al. 2020

Plants

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Drought is one of the most important abiotic stresses and hampers many plant physiological processes under suboptimal nitrogen (N) concentration. Seedling tolerance to drought stress is very important for optimum growth and development, however, the enhancement of plant stress tolerance through N application in cotton is not fully understood. Therefore, this study investigates the role of high N concentration in enhancing drought stress tolerance in cotton. A hydroponic experiment supplying low (0.25 mM) and high (5 mM) N concentrations, followed by 150 g L−1 polyethylene glycol (PEG)-induced stress was conducted in a growth chamber. PEG-induced drought stress inhibited seedling growth, led to oxidative stress from excessive malondialdehyde (MDA) generation, and reduced N metabolism. High N concentrations alleviated oxidative damage and stomatal limitation by increasing antioxidant enzymatic activities, leaf relative water content, and photosynthesis in cotton seedlings under drought stress. The results revealed that the ameliorative effects of high N concentration may be ascribed to the enhancement of N metabolizing enzymes and an increase in the amounts of osmoprotectants like free amino acids and total soluble protein. The present data suggest that relatively high N concentrations may contribute to drought stress tolerance in cotton through N metabolism, antioxidant capacity, and osmotic adjustment.

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Effect of osmotic stress on osmolyte accumulation and ammonia assimilating enzymes in chickpea cultivars

Cited by 11 publications

References 11 publications

Drought Induced Changes in Growth, Osmolyte Accumulation and Antioxidant Metabolism of Three Maize Hybrids

Drought Induced Changes in Growth, Osmolyte Accumulation and Antioxidant Metabolism of Three Maize Hybrids

Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress

High Nitrogen Enhance Drought Tolerance in Cotton through Antioxidant Enzymatic Activities, Nitrogen Metabolism and Osmotic Adjustment

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